This Precalculus video tutorial provides a basic introduction into polar coordinates. It explains how to convert polar coordinates to rectangular coordinates and how to graph polar coordinates by plotting points using the radius of a circle and the angle measured counter clockwise from the positive x axis. In addition, it explains how to convert rectangular coordinates to polar coordinates and how to provide multiple representation of polar coordinates using negative r values / radius and negative angles. This video contains plenty of examples and practice problems.

Solving Trig Equations - Finding All Solutions:
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Solving Trig Equations With Multiple Angles:
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Solving Trig Equations With Double Angles:
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Law of Sines:
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More Examples - Law of Sines:
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Area of an Oblique Triangle:
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The Height of a Triangle - Heron's Formula:
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Law of Cosines:
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Polar Equations to Rectangular Equations:
   • Polar Equations to Rectangular Equati...  

Rectangular Equations to Polar Equations:
   • Rectangular Equation to Polar Equatio...  

How To Graph Polar Equations:
   • How To Graph Polar Equations  

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Complex Numbers - De Moivre's Theorem:
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Dot Product of Two Vectors:
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Trigonometry Final Exam Review:
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